JANTX1N4989CUS

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The JANTX1N4989CUS is a silicon epitaxial planar type Zener diode optimized for use as a low power voltage reference. It is a small-signal, low-noise device designed for general purpose applications.

The device offers an symmetric conduction of about 45mA for both polarities which can be used as a temperature compensated Zener diode. It has a reverse breakdown voltage of 8.2V, and a maximum power dissipation of 0.5W. The JANTX1N4989CUS also has a low leakage current and a maximum thermal resistance of 110°C/W.

The device is typically used in voltage regulation, telecommunications and automotive applications. It can be used as a voltage regulator or as an emitter follower in a low-voltage circuit. It is also used in over-voltage protection and to maintain constant loads in power supplies.

The working principle of the JANTX1N4989CUS is based on the fact that, when a reverse bias voltage is applied to a diode, an almost constant reverse current will flow. This current generates a voltage drop across the diode\'s junction which is proportional to the temperature. This effect is known as the Zener Effect, and it is the basis of the Zener diode\'s operation.

The Zener diode works by allowing a controlled reverse current to flow when the reverse voltage exceeds a certain threshold. This reverse current maintains a constant voltage across the diode, regardless of the supply voltage. The Zener diode works by allowing a controlled reverse current to flow when the reverse voltage exceeds a certain threshold. This reverse current maintains a constant voltage across the diode, regardless of the supply voltage.

In summary, the JANTX1N4989CUS is a low power voltage reference optimized specifically for use as a Zener diode. It is used in a wide variety of applications such as voltage regulation, telecommunications, low-voltage circuits, over-voltage protection and power supply control. Its working principle is based on the Zener Effect and it allows a constant voltage to be maintained across the diode regardless of the supply voltage.

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